implementations of Domain Name System DNS name server software . Servers compared Each of these Domain Name System DNS servers is an independent implementation of the DNS protocols, capable of resolving DNS names for other computers, publishing the DNS names of computers, or both. Excluded from consideration are single feature DNS tools such as proxies, filters, and firewalls and redistributions ... . DNS servers are grouped into several categories of specialization of servicing domain name system ... product are Authoritative server authoritative name server s publish DNS mappings for domains under ... authority services to respond to address queries, or for other DNS information, for www.example.int ... with the master server, either via a DNS mechanism, or by other data store synchronization mechanisms ... called DNS caches , caching only name servers provide DNS name resolution for applications, by relaying ... www.example.com . BIND BIND is the de facto standard DNS server. ref cite web url http dns.measurement factory.com surveys sum1.html title DNS Surveys sponsored by Infoblox publisher Dns.measurement ... . It is the most widely deployed DNS server. ref name autogenerated2004 cite web last Moore first Don year 2004 url http mydns.bboy.net. survey title DNS server survey accessdate 2005 01 06 ref Historically .... Microsoft DNS Microsoft DNS is the DNS server provided with Windows Server . Dnsmasq Dnsmasq is a lightweight, easy to configure DNS forwarder, designed to provide DNS and optionally Dynamic Host .... It can serve the names of local machines which are not in the global DNS. Dnsmasq accepts DNS queries and either answers them from a small, local cache or forwards them to a real, recursive DNS server ... in the global DNS can be resolved. djbdns Djbdns is a collection of DNS applications, including tinydns , which was the second mostly used free software DNS server in 2004. ref name autogenerated2004 ... DNS Plus Simple DNS Plus is a commercial DNS server product that runs under Microsoft Windows with an emphasis ... more details
Infobox software name Unbound logo screenshot caption developer NLnet Labs released Start date and age 2007 latest preview version latest preview date latest release version 1.4.16 latest release date Start date and age 2012 02 02 programming language C programming language C operating system Unix like , Microsoft Windows Windows language English language English status Active genre Domain Name System DNS server license BSD license website URL unbound.net Unbound is a validating, recursive, and caching Domain name system DNS Server computing server software product from NLnet Labs, VeriSign Inc., Nominet UK Nominet , and http www.kirei.se Kirei . It is distributed free of charge in open source form under the BSD license . Originally designed by Jakob Schlyter of http www.kirei.se Kirei and Roy Arends of Nominet UK Nominet in 2004 , funding was provided by VeriSign and ep.net to develop a prototype written in Java language Java David Blacka and Matt Larson, VeriSign . Starting in 2006 the prototype was re written for high performance in the C programming language C programming language by NLnet Labs. Unbound is designed as a set of modular components that incorporate modern features, such as enhanced security DNSSEC validation, Internet Protocol Version 6 IPv6 , and a client resolver library Application programming interface API as an integral part of the architecture. Originally written for Posix compatible Unix like operating system, it runs on FreeBSD , OpenBSD , NetBSD , and Linux , as well as Microsoft Windows . See also Comparison of DNS server software External links http unbound.net Unbound http unbound.jp Japan Unbound Users Group http www.infoworld.com article 08 05 20 New open source DNS server released 1.html New open source DNS server released https calomel.org unbound dns.html Unbound DNS Tutorial with examples and explanations network software stub Category DNS software Category Free network related software Category Free software programmed in C it Un ... more details
A wildcard DNS record is a record in a DNS zone that will match requests for non existent domain names. A wildcard DNS record is specified by using a as the leftmost label part of a domain name, e.g. tt ... and unexpected results when they are used. Definitions of DNS wildcards A wildcard DNS record in a zone ... DNS record will cause DNS lookups on domain names ending in tt example.com tt that do not exist ... tt would return an MX record pointing to tt host1.example.com tt . Wildcards in the DNS are much more limited than other wildcard character s used in other computer systems. Wildcard DNS records have a single asterisk as the leftmost DNS label , such as tt .example.com tt . Asterisks at other ... tt work as wildcard DNS records. Moreover, the wild card is matched only when a domain does ... definition of how a DNS wildcard behaves is specified in RFC 1034 sections 4.3.2 and 4.3.3, but only ... to names in the zone which aren t listed in the DNS at all. That is, if there is a wild card MX for tt ..., do not remove this Say there is a DNS zone with the following resource records pre ORIGIN example ... tt host.subdel.example. tt into a different DNS zone . Even if tt host.subdel.example. tt does ... &mdash which covers all but its own subdomains. Wildcards in practice To quote from RFC 4592, many DNS ... tt tcp.host1.example. tt existing. Microsoft DNS Microsoft s DNS server if configured to do ... The Internet Software Consortium produced a version of the BIND DNS software that can be configured by system administrators to filter out wildcard DNS records from certain domains. Various developers have produced software patch es for BIND and for djbdns . Other DNS server programs have followed suit, providing the ability to ignore wildcard DNS records as configured. References reflist External links http www.iab.org documents docs 2003 09 20 dns wildcards.html IAB Commentary Architectural Concerns on the use of DNS Wildcards https www.isc.org software bind delegation only Internet ... more details
FCrDNS , or forward confirmed reverse DNS , or full circle reverse DNS , also known as iprev , is a situation where a given IP address has forward name to address and reverse address to name Domain Name System DNS entries that match each other. The process of checking this is as follows described as a Proposed Standard by RFC 5451, section 3 and previously outlined in RFC 1912, especially section 2.1 First a reverse DNS lookup PTR query is performed on the IP address, which returns a list of zero or more PTR Record PTR records . For each domain name returned in the PTR query results, a regular forward DNS lookup List of DNS record types A type A or AAAA query is then performed on that domain name. Any A or AAAA record returned by the second query is then compared against the original IP address, and if there is a match, then the FCrDNS check passes. Example DNS query type PTR on 192.0.2.4 returns PTR record hostname.example.com 1 result DNS query type A on hostname.example.com returns A record 192.0.2.4 1 result Matches original IP address, therefore check passes Important anti spam and email verification techniques such as SenderID and Sender Policy Framework, rely on the reverse lookup ... computers infected with spambots will not be able to fake the reverse DNS to make it match. The main ... in controlling spam, underwritten and justified by supporting RFCs. Common DNS misconfigurations are outlined ... configure reverse DNS will generate problems for hosts on their networks, by virtue of RFCs being contravened ... reverse DNS is trivial to implement correctly and there is no reason not to implement it for hosts providing regular internet services. ISPs that cannot or will not provide reverse DNS ultimately ... DNS and rDNS records for their mail servers. http forum.spamcop.net forums index.php?act findpost&pid ... Considerations for the use of DNS Reverse Mapping Internet draft http ipadmin.junkemailfilter.com ... Network protocols Category Computer network security de Forward confirmed reverse DNS ... more details
Refimprove date August 2008 DNS zone transfer , also sometimes known by its most common opcode mnemonic AXFR , is a type of Domain Name System DNS Database transaction transaction . It is one of the many ... containing the DNS data across a set of DNS server s. Zone transfer comes in two flavors, full opcode ... of the use of other database replication mechanisms that modern DNS server packages provide. Operation ... as a primary server. The portion of the database that is replicated is a DNS zone zone . Zone transfer ... of Authority SOA Start of Authority resource record for the zone apex , the node of the DNS ... using their system s normal DNS query resolution mechanism. These clients do not open a TCP .... However, since TCP can be used for normal DNS transactions, as well as for zone transfer, other ... of wire format resource records, i.e. resource records as they are transferred using the DNS ... by the back end s of the DNS servers themselves. Operational problems Serial number changes The preamble ... whether a zone s data have changed, and thus the actual data transfer is required. For some DNS server ... it or increasing it by a huge amount . Some DNS server packages have overcome this problem ... a single central DNS server holding the master version of the database with all other DNS servers merely holding copies, simply does not match that of many modern DNS server packages. Modern DNS server ... number to record changes, and thus is incompatible with zone transfer to a large extent. Modern DNS ..., for this and several reasons outlined later, DNS servers that use such sophisticated database ... to the client. However, this is inefficient, and some DNS server software took to implementing optimizations, geared at allowing the response compression mechanism in the DNS protocol to reduce the total ..., and would fail to perform data transfer if such optimizations were employed. Several DNS server ... format responses for those clients that require it. Exposure of Data The data contained in a DNS ... more details
This List of DNS record types provides an overview of types of resource record s database records stored in the zone file s of the Domain Name System DNS . The DNS implements a distributed, hierarchical ... 3596 ref cite web url http tools.ietf.org html rfc3596 section 2 title RFC 3596 DNS Extensions to Support ... 12 RFC 1035 ref name RFC1035 page 12 Canonical name record Alias of one name to another the DNS lookup ... Validation record For publishing DNSSEC trust anchors outside of the DNS delegation chain. Uses ... aliases only the exact name in its label. Like the CNAME record, the DNS lookup will continue by retrying the lookup with the new name. div id DNSKEY DNSKEY 48 RFC 4034 DNS Key record The key record ... keys are stored in DNS as KEY RRs and a private key is stored at the signer. ref RFC 3445 eliminated ... name. Note that this has nothing to do with DNS Security. It is Informational status, rather than ... html rfc1035 page 12 RFC 1035 ref name RFC1035 page 12 name server record Delegates a DNS zone ..., DNS processing does NOT proceed, just the name is returned. The most common use is for implementing reverse DNS lookup s, but other uses include such things as Zero configuration networking Apple s protocol Multicast DNSDNS SD DNS SD . div id RRSIG RRSIG 46 RFC 4034 DNSSEC signature Signature for a DNSSEC ... about a DNS zone , including the primary name server, the email of the domain administrator, the domain ... Resource record for publishing Secure Shell SSH public host key fingerprints in the DNS System, in order .... See the http www.iana.org assignments dns sshfp rr parameters dns sshfp rr parameters.xml IANA ... proposal for DNSSEC without a signed DNS root. See the http www.iana.org assignments dns ... RFC 2845 Transaction Signature Can be used to authenticate dynamic DNS dynamic updates as coming ... page 12 RFC 1035 ref name RFC1035 page 12 Text record Originally for arbitrary human readable text in a DNS ... configuration networking Apple s protocol Multicast DNSDNS SD DNS SD , etc. Other types and pseudo ... more details
on the Internet, is currently using DNS whitelisting on a per ISP basis to prevent this. ref cite ... 29 ref ref cite web url http arstechnica.com web news 2010 03 yahoo wants two faced dns to aid ipv6 deployment.ars title Yahoo wants two faced DNS to aid IPv6 deployment author Iljitsch van Beijnum publisher Ars Technica accessdate 2010 12 29 ref In the DNS whitelisting approach, ISPs are determined from DNS lookup source IP addresses by correlating them with network prefixes derived from routing table s. There is an http tools.ietf.org html draft livingood dns whitelisting implications IETF draft entitled IPv6 AAAA DNS Whitelisting Implications that describes the issues around whitelisting. AAAA ... IPv6. Numerous concerns have been raised about the practicality of DNS whitelisting as a long term ... 1.pdf title IPv6 DNS Whitelisting &mdash Overview and Implications author Jason Livingood date October ... web service providers have met to discuss pooling their DNS whitelisting information in an attempt ... v6ops v6 aaaa whitelisting implications title IPv6 AAAA DNS Whitelisting Implications author J. Livingood ... more details
The Internet uses the Domain Name System DNS to associate the names of computers with their numeric IP address es and with other information. The top level of the domain name hierarchy, the DNS root , contains the top level domain s that appear as the suffixes of all Internet domain name s. The official DNS root is administered by the Internet Corporation for Assigned Names and Numbers ICANN . In addition, several organizations operate alternative DNS roots , often referred to as alt roots . These alternative domain name systems operate their own root nameserver s and administer their own specific name spaces consisting of custom top level domains. The Internet Architecture Board IAB has spoken ... on the Unique DNS Root , Internet Architecture Board, The Internet Society May 2000 , Quote There is no getting away from the unique root of the public DNS. page 5 ref Description The DNS root zone ... by the organizations that manage these alternative TLDs. Alternative DNS roots may be characterized ... failure of several alternative DNS root providers. Citation needed date August 2009 A top level ... them. List of alternative roots This section lists the known alternate DNS roots. Active alternate ... P2P DNS http dot bit.org dot bit.org NameCoin project wiki NameCoin top level domains are not managed ... DNS, DNS suffix, gateway, browser plugin or install NameCoin software and gain independent ... code porn code code xxx code eDNS eDNS alternative DNS root eDNS stopped in 1998. code biz code ... of the DNS namespace was Open RSC , a group that grew out of private discussions and developed ... to the United States government to run the DNS. ref cite web url http www.ntia.doc.gov ntiahome ... ORSC s position following extensive public discussion regarding the manner in which the DNS ... DEFAULTSORT Alternative Dns Root Category Alternative Internet DNS services Category Internet governance ja no Alternativ DNS rot ru DNS ... more details
The following table lists technical information for a number of DNSBL DNS blacklists . class wikitable style width auto text align center font size smaller Blacklist operator DNS blacklist Informational URL Zone Listing goal Nomination Listing lifetime Notes Collateral Listings Notifys upon listing ARM Research Labs, LLC http www.gbudb.com GBUdb Truncate http www.gbudb.com truncate truncate.gbudb.net Extremely conservative list of single IP4 addresses that produce exclusively spam malware as indicated by the GBUdb IP Reputation system. Most systems should be able to safely reject connections based on this list. Automatic IPs are added when the GBUdb cloud statistics reach a probability figure that indicates 95 of messages produce a spam malware pattern match and a confidence figure that indicates sufficient data to trust the probability data. Automatic Continuous while reputation statistics remain bad. IPs are dropped quickly if the statistics improve within an hour . IPs are dropped within 36 hours typ if no more messages are seen dead zombie . Source data is derived from a global network ... A or MX records in Domain name system DNS Open submission via automated testing page. Until ... DNS Blacklist DNSBL Intercept http intercept.datapacket.net intercept.datapacket.net IP addresses ... addresses detected as abusive at ISP s using MagicMail Servers, with no reverse DNS service Automatically Submitted Listed until removed, and reverse DNS configured yes no RATSDYNA http www.spamrats.com ... reverse DNS service See Best Practises indicative of compromised systems Automatically Submitted Listed until removed, and reverse DNS set to conform to Best Practises yes no RATSSPAM http www.spamrats.com ... that have sent spam. spamtraps until removal requested and matter resolved by changing server DNS ... Email Filter Hostkarma http wiki.junkemailfilter.com index.php Spam DNS Lists hostkarma.junkemailfilter.com ... http spamlinks.net filter dnsbl lists.htm Spam Links DNS & RHS Blackhole Lists http multirbl.valli.org ... more details
Comodo SecureDNS is a free public DNS service offered by Dns.com DNS.com , part of the Comodo Group , that claims to protect home and office Internet access and optimize Web browsing speed. ref http securedns.dns.com DNS.com Comodo SecureDNS Webpage ref The service was first offered in December 2009. ref http www.comodo.com news press releases 10 12 09.html Comodo.com Free Comodo DNS Excels Commercial Broadband Routing ref Comodo SecureDNS is a domain name resolution service that resolves DNS requests through a worldwide network of DNS servers. Users can activate Comodo SecureDNS by setting their DNS server addresses to the Comodo SecureDNS servers hosted at 8.26.56.26 and 8.20.247.20 . See also OpenDNS Google Public DNSDNS Advantage Norton DNS Reference reflist Category Alternative Internet DNS services web stub ... more details
The Authoritative Name Server ANS is high end commercial authority only Domain name system DNS Server computing server software product from Nominum , a company founded by Paul Mockapetris , the inventor of the DNS. ANS was designed to meet the needs of Top Level Domain top level domain servers. See also Comparison of DNS server software External links http www.nominum.com products ans premier ans.php ANS Premier and ANS network software stub Category DNS software ... more details
mysqlBind unxsBind is a DNS management software system. It supports Internet Systems Consortium ISC BIND Domain Name System DNS and is distributed as open source software under the GNU General Public License ... DNS systems time consuming and prone to human error ref Gary Wallis, Website, April 2004, http openisp.net ... in a replicated SQL database and limits any DNS configuration errors to one Reliability engineering software package failure point . unxsBind is a BIND9 server management system only, not a DNS server, and generates DNS server specific configuration files so that the DNS server does not have to rely ... and deployment of new DNS zone zone s, new resource record s, resource record changes and zone ... of large scale DNS services ref Dilva Garmendia, Website, May 2008, http unixservice.com ?gcPage ... their own DNS data from a shared infrastructure. This unxsBind shared infrastructure supports an unlimited number of organizations that can then administrate their own DNS resources, such as IP address IP blocks, DNS zone zone s and resource record s. unxsBind provides for the centralized management ... and new interfaces. This along with the backend DNS configuration engine and front end interface model used in unxsBind is meant to provide the DNS service provider with a simple path to provision their own custom interfaces with advanced functionality. For example, a DNS service provider branded .... Recent versions allow unlimited Split horizon DNS split horizon configurations multiple BIND ... validation and contextual glossary based help. Wizards are provided for error prone complex DNS configuration management operations, e.g. in addr.arpa reverse dns NS delegation using CIDR and GENERATE ... DNS hosting service Cluster manager DNSSEC Latest versions of mysqlBind iDNS support BIND 9.6 for easy ... Software Internet Servers Address Management Address Management Listings of DNS software Dmoz Computers Internet Protocols DNSDNS Providers DNS Providers Listings of providers of DNS services Dmoz ... more details
Infobox Software name YADIFA caption developer EURid latest release version 1.0.0 rc2 latest release date release date and age 2012 03 28 latest preview version 1.0.0 rc2 latest preview date release date and age 2012 03 28 operating system Unix like genre DNS server license BSD license website http www.yadifa.eu www.yadifa.eu YADIFA is written by Gery Van Emelen and Eric Diaz Fernandez at EURid . The acronym YADIFA stands for Yet Another DNS Implementation For All . YADIFA ref http www.yadifa.eu YADIFA Official Website ref is written from scratch in C and supports DNSSEC , TSIG , DNS notify , DNS update , IPv6 . References Reflist External links http www.eurid.eu EURid Official Website http www.whois.eu WHOIS for .eu domain names RFC 2136 Dynamic Updates in the Domain Name System DNS UPDATE RFC 2845 Secret Key Transaction Authentication for DNS TSIG DEFAULTSORT YADIFA Category DNS software Category Free network related software nl YADIFA ... more details
Orphan date February 2009 Infobox Software name DNSMax logo screenshot caption DNS Server and Management Software author Algenta Algenta Technologies developer Algenta Algenta Technologies released September 2, 2003 latest release version 2.1 latest release date July 25, 2007 latest preview version latest preview date programming language operating system platform Unix like language status Active genre Domain Name System DNS server license Proprietary software website http www.dnsmax.com DNSMax is a proprietary licensed Domain Name System DNS server for Unix like systems. DNSMax is part of a suite which includes both custom DNS server software and graphical configuration and zone file management programs. DNSMax has IPv6 support. See also Comparison of DNS server software External links http www.dnsmax.com DNSMax website http www.algenta.com Algenta website network software stub Category DNS software ... more details
by the Domain Name System DNS to provide a means of authenticating updates to a Dynamic DNS database ... each endpoint of a connection as being allowed to make or respond to a DNS update. Although queries to DNS may be made anonymously but see DNSSEC , updates to DNS must be authenticated since they make ... making the update and the DNS server guarantees the authenticity of the update request. However, the update ... DNS servers and TSIG clients to contain an accurate clock. Since DNS servers are connected to a network, Network Time Protocol may be used to provide an accurate time source. DNS updates, like ... Transmission Control Protocol TCP . However, DNS servers support both UDP and TCP requests. Implementation An update, as specified in RFC 2136, is a set of instructions to a DNS server. These include ... specially crafted update probes . The nsupdate program can use TSIG to do DNS updates. The TSIG record ... is linked from Dynamic DNS Although TSIG is widely deployed, there are several problems ... an update method using a public key SIG DNS record. A client holding the corresponding private ... distributing keys to all TSIG clients. The method for distributing public keys as a DNS resource ... Dynamic Update. In combination with poorly configured DNS with no Reverse Lookup Zone using RFC 1918 addressing, reverse DNS updates using this authentication scheme are forwarded en masse to the root DNS servers and increase the traffic to root DNS servers in the course of doing so http www.caida.org ... it away from the root DNS servers http public.as112.net . RFC 2845, which defines TSIG, specifies ... generated by MD5 . RFC 2930, which defines TKEY , a List of DNS record types DNS Record used to automatically distribute keys from a DNS server to DNS clients RFC 3645, Which defines GSS TSIG which uses ... similarities to TSIG. See also List of DNS record types References Broido, Nemeth, claffy. Spectroscopy of DNS Update Traffic , CAIDA, 2002. External links RFC 2136 Dynamic Updates in the Domain Name ... more details
NSTX may mean National Spherical Torus Experiment NSTX software Internet protocol IP over domain name system DNS tunneling protocol tunneling software disambig ... more details
Refimprove date December 2009 GSS TSIG Generic Security Service Algorithm for Secret Key Transaction is an extension to the TSIG DNS authentication protocol for secure key exchange. It is a GSS API algorithm which uses Kerberos for passing security tokens to provide authentication, integrity and confidentiality. GSS TSIG RFC 3645 uses a mechanism like SPNEGO with Kerberos or NTLM . In Windows, this implementation is called Secure Dynamic Update . ref http technet.microsoft.com en us library cc961412.aspx Secure Dynamic Update Windows 2000 DNS MSDN ref GSS TSIG uses TKEY record s for key exchange between the DNS client and server in GSS TSIG mode. For authentication between the DNS client and Active Directory , the AS REQ, AS REP, TGS REQ, TGS REP exchanges must take place for granting of ticket and establishing a security context. The security context has a limited lifetime during which dynamic updates to the DNS server can take place. References reflist Category Cryptographic protocols ... more details
Cleanup rewrite date July 2008 An ISP redirect page is a page used by major ISPs including Cox Communications , Embarq , Verizon , Rogers , Earthlink , and various others. If a user types in an incorrect url for example wikipedia.con instead of wikipedia.com , the ISP s Domain Name System DNS server will catch this, and offer a suggestion on what the user might have meant. How this works Domain Name System DNS Resolution is the process of translating a domain name for example www.wikipedia.org into an IP address that computers can use. Every ISP runs a DNS server usually many DNS servers to help their customers translate domain names into IP addresses that computers understand and use. When an ISP s DNS server receives a request to translate a name, the DNS server returns the IP address back to the customer s computer and the customer s computer is then able to connect to the requested resource. When the ISP s DNS server receives a request for a name that is not recognized or is unavailable, the DNS server returns the IP address of a search page to the client. When the client is using a web browser, this will display a search page that contains possible suggestions on the proper address and a small explanation of the error. These search pages often contain advertising that is paid to the ISP. Sometimes, a customer can opt out of this service. Opt out procedures vary from ISP to ISP in both their method of implementation and effectiveness. It s been said in various Internet forum forums that anyone who permanently wishes to opt out of such services, should use a different DNS server. Fact date April 2009 References & Resources http www.dslreports.com shownews 83929 News article about Cox redirection service http www.dslreports.com speak slideshow 18358718?c 1165259&ret L2ZvcnVtL3JlbWFyaywxODM1MDg0OQ 3D 3D external image of what this looks like Category Internet service providers ... more details
unreferenced date December 2009 lowercase title resolv.conf resolv.conf is the name of a computer file used in various operating systems to configure the Domain Name System DNS resolver DNS resolver library. The file is a plain text file usually created by the network administrator or by applications that manage the configuration tasks of the system. The resolvconf program is one such program on linux machines which manages the resolv.conf file. Purpose In most Unix like operating system s and others that implement the BIND Domain Name System DNS resolver DNS resolver library, the resolv.conf configuration file contains information that determines the operational parameters of the DNS resolver. The DNS resolver allows applications running in the operating system to translate human friendly domain name s into the numeric IP address es that are required for access to resources on the local area network or the Internet . The process of determining IP addresses from domain names is called resolving . Contents and location The resolv.conf file typically contains directives with the IP addresses of nameserver s available to a host. Such as tt nameserver 172.16.1.254 tt resolv.conf is usually located in the etc directory of the file system . Sometimes it is necessary that the contents of this configuration file be managed by multiple agents or programs. For this purpose the resolvconf program is available to manage such operations in a conflict free manner. See also Hosts file External links http linux.die.net man 5 resolv.conf Linux resolv.conf man page . Category Domain name system Category Configuration files compu domain stub ... more details
The Domain Name System DNS is a hierarchical distributed naming system for computers, services, or any ... assign other authoritative name servers for their sub domains. This mechanism has made the DNS distributed ... identifiers could all potentially use DNS. ref cite web last Mockapetris first Paul authorlink Paul Mockapetris title Letting DNS Loose publisher CircleID url http www.circleid.com posts letting dns loose date 2004 01 02 quote RFID tags, UPC codes, International characters in email addresses and host names, and a variety of other identifiers could all go into DNS ... it s ready to carry arbitrary ... 1101 DNS Encoding of Network Names and Other Types date April 1989 page 1 quote The DNS is extensible ... Name System also specifies the technical functionality of this database service. It defines the DNS protocol, a detailed specification of the data structures and communication exchanges used in DNS, as part ... Society November 1987 ref A DNS name server is a server that stores the DNS records for a domain ... also list of DNS record types a DNS name server responds with answers to queries against its database ... address on a network dates back to the ARPANET era. Before the DNS was invented in 1982, each computer ... . ref name rfc2467 RFC 3467, Role of the Domain Name System DNS , J.C. Klensin, J. Klensin February 2003 ref ref cite book title DNS and BIND edition 5th page 3 year 2006 author Cricket Liu, Paul Albitz ... have proposed various extensions to the core DNS protocols. In 1984, four University of California ... DEC significantly re wrote the DNS implementation. Mike Karels, Phil Almquist, and Paul Vixie have maintained ... was widely distributed, especially on Unix systems, and is the dominant DNS software in use on the Internet. ref cite web url http mydns.bboy.net survey title DNS Server Survey ref With the heavy use ... to the development of a number of Comparison of DNS server software alternative name server and resolver ... to other modern DNS software. citation needed date January 2011 Structure anchor The domain name space ... more details
Reverse lookup may refer to Reverse telephone directory Reverse DNS lookup Method for verifying that the correct translation has been chosen when using a bilingual dictionary disambig Long comment to avoid being listed on short pages ... more details
DDPO may refer to Defense Dissemination Program Office, see National Geospatial Intelligence Agency DDPO, a Tehsil management office, see Sambrial Dolce DnS Plan Ontology, see process ontology disambig ... more details
Orphan date October 2009 Notability Companies date April 2011 Infobox software name Posadis logo screenshot caption developer Meilof latest release version 0.60.6 latest release date December 25, 2004 latest preview version latest preview date operating system Unix like , Microsoft Windows Windows platform genre Domain Name System DNS server license GNU General Public License website http posadis.sourceforge.net posadis.sourceforge.net In computing , Posadis is a GNU General Public License GPL licensed Domain Name System DNS server for Microsoft Windows and Unix that uses a zone file format that is compatible with BIND zone files. Posadis is part of a suite which includes graphical configuration and zone file management programs. Posadis has IPv6 support. See also Portal Free software Comparison of DNS server software External links http posadis.sourceforge.net Posadis website Freshmeat posadis Posadis Category DNS software Category Cross platform free software Category Free network related software network software stub ... more details
MaraDNS for public facing DNS servers ref cite book last Schroder first Carla title Linux Networking ... has limited support for being a slave DNS server. While MaraDNS includes a tool that can receive ... DNS servers can resolve, it does not resolve all names the same way other DNS servers do. CNAME ... recursive DNS request that is not already cached. MaraDNS has had a few security problems, as described ... of DNS server software References Reflist External links http www.maradns.org Official website ... Category DNS software Category Free network related software ... more details
GNZ may refer to Aviation Ghanzi Airport , IATA code GNZ Technology DNS zone GlobalNames zone GlobalNames zone , a Domain Name System zone type in Microsoft Windows Server 2008 disamb ... more details
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